Same molecule. Longer leash. IGF 1 LR3 is a long arginine 3 analog of insulin like growth factor 1. The Arg3 substitution prevents binding to IGFBP 3, the carrier protein that normally clears IGF 1 from circulation. Half life IGF 1 LR3 1mg Research Vial Long Acting IGF 1 LiveWell IGF 1 LR3 Superior Peptide IGF1 LR3 Palm Beach Gardens FL Physician's Rejuvenation Centers
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